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de Villarreal-Soto JE, Oteo-Domínguez JF, Martínez-López D, Ríos-Rosado EC, Vera-Puente B, Olivo-Soto JC, Arízaga-Arce F, García-Pavía P, Ospina Mosquera VM, Villar García S, García Suárez J, Cavero MÁ, Martín-López CE, Forteza-Gil A. Extended septal myectomy versus alcohol septal ablation: clinical results at a national referral centre. INTERDISCIPLINARY CARDIOVASCULAR AND THORACIC SURGERY 2024; 38:ivae058. [PMID: 38569884 DOI: 10.1093/icvts/ivae058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 02/06/2024] [Accepted: 04/02/2024] [Indexed: 04/05/2024]
Abstract
OBJECTIVES Extended septal myectomy and alcohol septal ablation are 2 invasive treatments for hypertrophic obstructive cardiomyopathy. Our goal was to compare which of these techniques achieved a higher reduction in gradients, improvement in New York Heart Association (NYHA) functional class and reduction in medical treatment. METHODS It is a single-centre observational and retrospective analysis. We used multivariable regression analyses to assess the association of ablation/myectomy with different outcomes. The odds ratio or coefficient along with the 95% confidence interval was estimated according to the group and adjusted for the corresponding preprocedural variables and EuroSCORE II. RESULTS A total of 78 patients underwent septal myectomy, and 25 patients underwent alcohol septal ablation. Basal and Valsalva gradients after myectomy were reduced to a higher degree in comparison to ablation: 21.0 mmHg [P < 0.001, 95% confidence interval -30.7; -11.3], and 34.3 mmHg (P < 0.001, -49.1; -19.5) respectively. Those patients who received a myectomy had a lower probability of having moderate mitral regurgitation (odds ratio = 0.18, P = 0.054). Patients after septal myectomy were more likely to be NYHA functional class I (80.4%), whereas patients after ablation were more likely to be NYHA functional class III (48%). Both groups continued with beta-blocker therapy, but disopyramide could be discontinued after the myectomy in more cases (20%-36% vs 59%-1.3%; P < 0.001), and there was a tendency to discontinue calcium channel blockers (48%-16% vs 15.4-3.8%; P = 0.054). CONCLUSIONS After adjustment using preprocedural gradients and EuroSCORE II, myectomy achieves greater reduction in left ventricular outflow tract gradients compared to septal ablation.
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Affiliation(s)
| | | | - Daniel Martínez-López
- Cardiac Surgery, Puerta de Hierro Majadahonda University Hospital, Majadahonda, Spain
| | | | - Beatriz Vera-Puente
- Cardiac Surgery, Puerta de Hierro Majadahonda University Hospital, Majadahonda, Spain
| | - Jean Carlo Olivo-Soto
- Cardiac Surgery, Puerta de Hierro Majadahonda University Hospital, Majadahonda, Spain
| | - Fernando Arízaga-Arce
- Cardiac Surgery, Puerta de Hierro Majadahonda University Hospital, Majadahonda, Spain
| | - Pablo García-Pavía
- Cardiology Department, Puerta de Hierro Majadahonda University Hospital, Majadahonda, Spain
| | | | - Susana Villar García
- Cardiac Surgery, Puerta de Hierro Majadahonda University Hospital, Majadahonda, Spain
| | - Jessica García Suárez
- Anesthesia Department, Puerta de Hierro Majadahonda University Hospital, Majadahonda, Spain
| | - Miguel Ángel Cavero
- Cardiology Department, Puerta de Hierro Majadahonda University Hospital, Majadahonda, Spain
| | | | - Alberto Forteza-Gil
- Cardiac Surgery, Puerta de Hierro Majadahonda University Hospital, Majadahonda, Spain
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Schaff HV, Juarez-Casso FM. Treatment Strategies for Hypertrophic Cardiomyopathy: Surgical. Am J Cardiol 2024; 212S:S53-S63. [PMID: 38368037 DOI: 10.1016/j.amjcard.2023.10.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 10/19/2023] [Indexed: 02/19/2024]
Abstract
Septal myectomy is a well-established procedure for septal reduction in patients with obstructive hypertrophic cardiomyopathy (HCM) who have not responded to medical treatment. The surgical approach is tailored to the unique pathophysiology and septal morphology of the patient. Extended transaortic myectomy is the standard procedure for patients with isolated subaortic obstruction, the most common type of HCM. However, transapical myectomy is a useful adjunct for patients with long or midventricular obstruction and is our preferred technique for ventricular enlargement in patients with severe symptomatic diastolic heart failure because of extensive apical hypertrophy. Septal myectomy provides excellent postoperative outcomes as regards symptom relief and functional improvement, and operative morbidity and mortality rates are low in experienced centers. This article summarizes our current surgical management of patients with HCM and details operative methods and outcomes.
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Affiliation(s)
- Hartzell V Schaff
- Department of Cardiovascular Surgery, Mayo Clinic, Rochester, Minnesota.
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Special Issue “New Perspectives in Cardiovascular Surgery”. J Clin Med 2022; 11:jcm11154535. [PMID: 35956150 PMCID: PMC9369964 DOI: 10.3390/jcm11154535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 08/02/2022] [Indexed: 02/01/2023] Open
Abstract
In recent decades, cardiovascular surgery has been making great strides in the field of medicine [...]
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Transaortic Shallow Septal Myectomy and Cutting of Secondary Fibrotic Mitral Valve Chordae—A 5-Year Single-Center Experience in the Treatment of Hypertrophic Obstructive Cardiomyopathy. J Clin Med 2022; 11:jcm11113083. [PMID: 35683470 PMCID: PMC9181673 DOI: 10.3390/jcm11113083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/23/2022] [Accepted: 05/27/2022] [Indexed: 02/01/2023] Open
Abstract
Background: Anomalies of the mitral apparatus have been shown to contribute to left ventricular outflow obstruction in patients with hypertrophic cardiomyopathy (HCM). We report our 5-year single-center experience with a shallow myectomy procedure associated with transaortic mitral valve repair in a cohort of HCM patients. Methods: We studied 83 consecutive patients who underwent surgical treatment of symptomatic left ventricular outflow obstruction. In all study patients, a transaortic shallow septal myectomy was performed. Fibrous or muscular structures connecting the papillary muscles to the septum or free wall were resected, and fibrotic secondary chordae of the anterior mitral valve were cut selectively. Results: We report one death (1.2%) during hospitalization, no iatrogenic ventricular septal defects, and two (2.4%) mitral valve replacements. At discharge, no patients were in New York Heart Association (NYHA) Class III/IV, from 49 (59%) preoperatively. Mean maximal septal thickness decreased from 24 ± 6 to 16 ± 3 mm. Mean outflow gradient decreased from 93 ± 33 to 13 ± 11 mmHg. Grade 3 or 4 mitral regurgitation was noticed in one patient postoperatively, from 32 (39%) before surgery. Conclusions: Shallow septal myectomy associated with secondary mitral valve chordal cutting and papillary muscle mobilization provided excellent results offering adequate treatment of outflow obstruction.
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Wei P, Liu J, Ma J, Liu Y, Tan T, Wu H, Zhu W, Chen Z, Chen J, Zhuang J, Guo H. Thoracoscopic Trans-mitral Septal Myectomy for Hypertrophic Obstructive Cardiomyopathy in the Elderly. Front Cardiovasc Med 2022; 9:827860. [PMID: 35369329 PMCID: PMC8965461 DOI: 10.3389/fcvm.2022.827860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 01/21/2022] [Indexed: 11/29/2022] Open
Abstract
Background The thoracoscopic trans-mitral approach can not only facilitate exposure of the ventricular septum, mitral valve, and subvalvular apparatus, it also enables the surgeons to perform concomitant mitral valve intervention. This study aimed to determine the safety and efficacy of thoracoscopic trans-mitral septal myectomy in elderly patients with hypertrophic obstructive cardiomyopathy (HOCM). Methods We reviewed the demographic to clinical characteristics and outcomes of patients who underwent thoracoscopic trans-mitral septal myectomy in our center between April 2019 and April 2021. The population was divided into a younger group (<60 years) and an elderly group (≥60 years). Results There were 46 and 20 patients in the younger and elderly groups, respectively. The majority of patients in the elderly group were female (39.1 vs. 80.0%, P < 0.01). Patients in the elderly group were more likely to be in New York Heart Association Class IV (2.2 vs. 80.0%, P < 0.01). The European System for Cardiac Operation Risk Evaluation II predicted mortality rates were significantly higher (3.97 ± 1.81 vs. 1.62 ± 0.86%, P < 0.01) in the elderly group. In the elderly group, a patient converted to median sternotomy due to left ventricular posterior free wall rupture following septal myectomy and mitral bioprosthetic valve replacement. The patient then underwent double-patch sandwich repair for rupture and mitral mechanical valve replacement and was eventually discharged. All patients in the elderly group were discharged, while one in the younger group died. No patient in the elderly group required permanent pacemaker implantation vs. one in the younger group. Patients in the elderly group were more likely to spend more time in the intensive care unit than those in the younger group (5.44 ± 5.80 days vs. 3.07 ± 2.72, P < 0.05). However, there was no significant intergroup difference in in-hospital mortality or complications. Importantly, the left ventricular outflow tract pressure gradient was significantly decreased from 96.15 ± 32.89 mmHg to 8.2 ± 3.42 mmHg with no residual obstruction in the elderly group. The interventricular septal thickness was significantly decreased from 19.73 ± 3.14 mm to 11.30 ± 2.23 mm. Postoperative mitral regurgitation severity was significantly improved in the elderly group. Conclusion This study demonstrated that thoracoscopic trans-mitral septal myectomy is a feasible option for selected elderly patients with satisfactory outcomes similar to those of young patients.
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Affiliation(s)
- Peijian Wei
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, China
| | - Jian Liu
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, China
| | - Jiexu Ma
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, China
| | - Yanjun Liu
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, China
| | - Tong Tan
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, China
| | - Hongxiang Wu
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, China
| | - Wei Zhu
- Department of Adult Cardiac Ultrasound Medicine, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, China
| | - Zhao Chen
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, China
| | - Jimei Chen
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, China
| | - Jian Zhuang
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, China
| | - Huiming Guo
- Department of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Guangzhou, China
- *Correspondence: Huiming Guo
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Quintana E, Bajona P. The first 200 septal myectomies: Ensuring gold standard outcomes. Asian Cardiovasc Thorac Ann 2021; 30:28-34. [PMID: 34730015 DOI: 10.1177/02184923211055869] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Septal myectomy remains the gold standard treatment for symptomatic left ventricular outflow tract obstruction refractory to medical treatment. It is recommended that this operation be performed in dedicated hypertrophic obstructive cardiomyopathy centres by experienced surgeons. The septal myectomy option remains unavailable to many patients based solely on geography, including those who would clearly benefit more substantially from surgery than other therapeutic options. Here, we share our experience in starting new hypertrophic cardiomyopathy programmes. METHODS We retrospectively reviewed initial septal myectomy experiences at two hypertrophic cardiomyopathy programmes starting in 2014. RESULTS Two-hundred septal myectomies were performed. Mean age was 58.8 years and 51% were females. Advanced heart failure symptoms were present in 95.5% of patients and 23.5% had experienced syncope. Mean maximal intraventricular gradient was 89 mmHg and 48.5% underwent concomitant procedures at the time of septal myectomy. There was no perioperative (in-hospital or 30 days) mortality. Ninety-two per cent had provoked left ventricular gradients of ≤ 15 mmHg and 97% had none/mild mitral regurgitation at post-operative assessment. In our contemporary cohort, there were 2 (1%) intraoperative ventricular septal defects and 5% required a permanent pacemaker. CONCLUSIONS Our early septal myectomy experience targeted a complex population, frequently in need of concomitant procedures. Abolition of left ventricular obstruction and resolution of systolic anterior motion mediated mitral regurgitation can be expected. The safety and efficacy of septal myectomy carried at hypertrophic cardiomyopathy centres by properly trained surgeons achieved the desired outcomes established by recent hypertrophic cardiomyopathy guidelines.
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Affiliation(s)
- Eduard Quintana
- Cardiovascular Surgery Department, 16493Hospital Clínic de Barcelona, University of Barcelona, Barcelona, Spain
| | - Pietro Bajona
- 92594Allegheny Health Network Cardiovascular Institute-Drexel University College of Medicine, Pittsburgh, PA, USA
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